title: Voltammetric characterization of a fully integrated, patterned single walled carbon nanotube three-electrode system on a glass substrate.
abstract: A single walled carbon nanotube (SWCNT)-based three-electrode system was fully integrated on glass substrates using a standard microfabrication process and electrochemically characterized using cyclic voltammetry. O(2) plasma functionalization of the SWCNT film working electrode for achieving high sensitivity was voltammetrically optimized with respect to the plasma power and treatment time. Chlorination of a Ag thin-film was done in an acidic solution for different dip times to form a thin-film Ag/AgCl reference electrode. The Nernstian behavior of as-prepared and seven-day-aged Ag/AgCl thin-film electrodes was investigated for seeking the optimum reference electrode with long-term stability and was compared to a commercial reference electrode. A quality control evaluation and a performance assessment of the fully integrated SWCNT-transferred sensing systems were performed using cyclic voltammetry. The proposed SWCNT-based three electrode device exhibited clear electrochemistry under voltammetric conditions, and is therefore a candidate for use in all electrochemical biosensors.
authors.affiliation: Department of Biomicrosystem Technology, Korea University, Seoul, 136-701, Republic of Korea.
authors.forename: Joon-Hyung
authors.initials: JH
authors.lastname: Jin
authors.forename: Joon Hyub
authors.initials: JH
authors.lastname: Kim
authors.forename: Jun-Yong
authors.initials: JY
authors.lastname: Lee
authors.forename: Nam Ki
authors.initials: NK
authors.lastname: Min
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation* / Q000379:methods; D055664:Electrochemical Techniques / Q000295:instrumentation / Q000379:methods*; D004566:Electrodes; D005898:Glass / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D018030:Silver Compounds / Q000737:chemistry
chemical_list: D037742:Nanotubes, Carbon; D018030:Silver Compounds; C037548:silver chloride